Drew Peterson's murder trial is already off to a dramatic start. The former suburban Chicago police officer is charged with killing his third wife Kathleen -- BO. Who was found dead in a bathtub eight years ago were ready to get started today and and that stopped them trying to -- through for an accident. Only an hour and opening statements -- jury had to be removed from the courtroom twice and the defense asked for a mistrial which was denied. The defense told jurors quote -- slipped and fell hit her head on the bathtub and died case closed -- -- death was originally ruled an accidental drowning. But when Peterson's fourth wife Stacy disappeared in 2007. Saudi -- -- remains were exhumed and her death was reclassified as homicide. Prosecutors told the jury Peterson quote grabbed -- Cenveo by the throat and said why don't you just die I could kill you and no one would know. Throughout -- case Peterson has displayed confidence in jail. And in the courtroom joking with his attorneys. This is going to be a spectacle this is going to be all about Drew Peterson this is used more. This is -- Drew Peterson -- among the first witnesses prosecutors are calling so obvious neighbors and the locksmith. But ultimately to -- says it's all circumstantial evidence that. -- there's no eyewitness. And there's no smoking gun no DNA. It. And with -- testimony attorneys estimate this trial could last up to four weeks. Brady hit ABC news Los Angeles.

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